80748591 has 32 divisors (see below), whose sum is σ = 135599616. Its totient is φ = 41520000.

The previous prime is 80748587. The next prime is 80748593. The reversal of 80748591 is 19584708.

It is not a de Polignac number, because 80748591 - 2² = 80748587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80748593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21601 + ... + 25061.

It is an arithmetic number, because the mean of its divisors is an integer number (4237488).

Almost surely, 2^80748591 is an apocalyptic number.

80748591 is a deficient number, since it is larger than the sum of its proper divisors (54851025).

80748591 is a wasteful number, since it uses less digits than its factorization.

80748591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 80748591 is about 8986.0219786066. The cubic root of 80748591 is about 432.2267595953.

The spelling of 80748591 in words is "eighty million, seven hundred forty-eight thousand, five hundred ninety-one".